2. Many big players (Saylor et al.) are accumulating BTC like crazy. And it's not just Saylor. There must be other big players that don't want to advertise their actions. Saylor is not only a HoDLer, but has risen to be a major Bitcoin evangelist, a more pragmatic, less scientific, more digestible version of the charismatic Andreas Antonopoulos. The latter is the scientist, the former is the engineer. Both are needed, both are right. Not many people want (or can) take that role, but they can buy BTC, and they do.
I agree with most of what you wrote, but I personally don’t like that individuals accumulate so much BTC despite being distinctly bullish at the moment - because it’s known what Saylor thought about BTC back in 2013, and I can never rule it out the possibility of him changing his mind again - because he is, after all, just a man trying to make as much profit as possible.
What Bitcoin needs is more decentralization, which is just the opposite of people like Saylor or Musk becoming his trademark.
Decentralization of ownership of coins is not going to happen. It's against human nature, and is the reason things like comunisim came to be and the reason why they fail.
That's ok though because ownership of coin is not that important in the decentralization story. Preventing control over the protocol is where decentralization matters and as we have seen recently, no matter the price, no matter the bullshit of regimes like the CCP, Bitcoin itself continues on without issue. It has and will always allow anyone, without prejudice, the ability to transact.